fix(artwork): broadcast refresh for stale-found artwork too

core/artwork/worker.go

@@ -143,7 +143,8 @@ func (w *Worker) drain(ctx context.Context, concurrency int) (int, error) {
 			defer wg.Done()
 			defer func() { <-sem }()
 			defer w.release(it)
-			if w.process(ctx, it) == outcomeFound {
+			// foundStale also wrote a served state row, so it must refresh the UI too.
+			if out := w.process(ctx, it); out == outcomeFound || out == outcomeFoundStale {
 				foundMu.Lock()
 				found = append(found, it)
 				foundMu.Unlock()

core/artwork/worker_test.go

@@ -222,6 +222,10 @@ var _ = Describe("Worker", func() {
 			ia, err := artRepo.GetItemArtwork("al", "alstale", model.ImageTypePrimary)
 			Expect(err).ToNot(HaveOccurred())
 			Expect(ia.Source).To(Equal("folder"), "the fallback art is served meanwhile")
+
+			evts := broker.getEvents()
+			Expect(evts).To(HaveLen(1), "the served fallback art must live-refresh the UI")
+			Expect(evts[0].(*events.RefreshResource).Data(evts[0])).To(ContainSubstring("alstale"))
 		})
 
 		It("keeps a row re-enqueued between dequeue and delete", func() {